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-rw-r--r--src/display/cairo-utils.cpp8
-rw-r--r--src/display/cairo-utils.h1
-rw-r--r--src/display/nr-filter-blend.cpp153
-rw-r--r--src/display/nr-filter-blend.h3
-rw-r--r--src/display/nr-filter-flood.cpp77
-rw-r--r--src/display/nr-filter-flood.h10
-rw-r--r--src/display/nr-filter-gaussian.cpp1
-rw-r--r--src/display/nr-filter-gaussian.h6
-rw-r--r--src/display/nr-filter-merge.cpp101
-rw-r--r--src/display/nr-filter-merge.h7
-rw-r--r--src/display/nr-filter-primitive.cpp2
-rw-r--r--src/display/nr-filter-primitive.h16
12 files changed, 91 insertions, 294 deletions
diff --git a/src/display/cairo-utils.cpp b/src/display/cairo-utils.cpp
index 36202f42e..ce56c21f5 100644
--- a/src/display/cairo-utils.cpp
+++ b/src/display/cairo-utils.cpp
@@ -367,6 +367,14 @@ ink_cairo_surface_create_identical(cairo_surface_t *s)
return ns;
}
+cairo_surface_t *
+ink_cairo_surface_create_same_size(cairo_surface_t *s, cairo_content_t c)
+{
+ cairo_surface_t *ns = cairo_surface_create_similar(s, c,
+ ink_cairo_surface_get_width(s), ink_cairo_surface_get_height(s));
+ return ns;
+}
+
/** @brief Extract the alpha channel into a new surface.
* Creates a surface with a content type of CAIRO_CONTENT_ALPHA that contains
* the alpha values of pixels from @a s. */
diff --git a/src/display/cairo-utils.h b/src/display/cairo-utils.h
index cfd33330b..3845d5ebb 100644
--- a/src/display/cairo-utils.h
+++ b/src/display/cairo-utils.h
@@ -86,6 +86,7 @@ void ink_cairo_set_source_argb32_pixbuf(cairo_t *ct, GdkPixbuf *pb, double x, do
cairo_surface_t *ink_cairo_surface_copy(cairo_surface_t *s);
cairo_surface_t *ink_cairo_surface_create_identical(cairo_surface_t *s);
+cairo_surface_t *ink_cairo_surface_create_same_size(cairo_surface_t *s, cairo_content_t c);
cairo_surface_t *ink_cairo_extract_alpha(cairo_surface_t *s);
cairo_surface_t *ink_cairo_surface_unshare(cairo_surface_t *s);
int ink_cairo_surface_get_width(cairo_surface_t *surface);
diff --git a/src/display/nr-filter-blend.cpp b/src/display/nr-filter-blend.cpp
index 4ce37ae3b..758b49fe4 100644
--- a/src/display/nr-filter-blend.cpp
+++ b/src/display/nr-filter-blend.cpp
@@ -21,14 +21,9 @@
#include "display/cairo-utils.h"
#include "display/nr-filter-blend.h"
-#include "display/nr-filter-pixops.h"
#include "display/nr-filter-primitive.h"
#include "display/nr-filter-slot.h"
#include "display/nr-filter-types.h"
-#include "display/nr-filter-units.h"
-#include "libnr/nr-pixblock.h"
-#include "libnr/nr-blit.h"
-#include "libnr/nr-pixops.h"
#include "preferences.h"
namespace Inkscape {
@@ -48,77 +43,6 @@ namespace Filters {
* cb = Color (RGB) at a given pixel for image B - premultiplied
*/
-/*
- * These blending equations given in SVG standard are for color values
- * in the range 0..1. As these values are stored as unsigned char values,
- * they need some reworking. An unsigned char value can be thought as
- * 0.8 fixed point representation of color value. This is how I've
- * ended up with these equations here.
- */
-
-// Set alpha / opacity. This line is same for all the blending modes,
-// so let's save some copy-pasting.
-#define SET_ALPHA r[3] = NR_NORMALIZE_21((255 * 255) - (255 - a[3]) * (255 - b[3]))
-
-// cr = (1 - qa) * cb + ca
-inline void
-blend_normal(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = NR_COMPOSEPPP_1111(a[0],a[3],b[0]);
- r[1] = NR_COMPOSEPPP_1111(a[1],a[3],b[1]);
- r[2] = NR_COMPOSEPPP_1111(a[2],a[3],b[2]);
- SET_ALPHA;
-}
-
-// cr = (1-qa)*cb + (1-qb)*ca + ca*cb
-inline void
-blend_multiply(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = NR_NORMALIZE_21((255 - a[3]) * b[0] + (255 - b[3]) * a[0]
- + a[0] * b[0]);
- r[1] = NR_NORMALIZE_21((255 - a[3]) * b[1] + (255 - b[3]) * a[1]
- + a[1] * b[1]);
- r[2] = NR_NORMALIZE_21((255 - a[3]) * b[2] + (255 - b[3]) * a[2]
- + a[2] * b[2]);
- SET_ALPHA;
-}
-
-// cr = cb + ca - ca * cb
-inline void
-blend_screen(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = NR_NORMALIZE_21((b[0] + a[0]) * 255 - a[0] * b[0]);
- r[1] = NR_NORMALIZE_21((b[1] + a[1]) * 255 - a[1] * b[1]);
- r[2] = NR_NORMALIZE_21((b[2] + a[2]) * 255 - a[2] * b[2]);
- SET_ALPHA;
-}
-
-// cr = Min ((1 - qa) * cb + ca, (1 - qb) * ca + cb)
-inline void
-blend_darken(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = NR_NORMALIZE_21(std::min(NR_COMPOSEPPP_1112(a[0],a[3],b[0]),
- NR_COMPOSEPPP_1112(b[0],b[3],a[0])));
- r[1] = NR_NORMALIZE_21(std::min(NR_COMPOSEPPP_1112(a[1],a[3],b[1]),
- NR_COMPOSEPPP_1112(b[1],b[3],a[1])));
- r[2] = NR_NORMALIZE_21(std::min(NR_COMPOSEPPP_1112(a[2],a[3],b[2]),
- NR_COMPOSEPPP_1112(b[2],b[3],a[2])));
- SET_ALPHA;
-}
-
-// cr = Max ((1 - qa) * cb + ca, (1 - qb) * ca + cb)
-inline void
-blend_lighten(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = NR_NORMALIZE_21(std::max(NR_COMPOSEPPP_1112(a[0],a[3],b[0]),
- NR_COMPOSEPPP_1112(b[0],b[3],a[0])));
- r[1] = NR_NORMALIZE_21(std::max(NR_COMPOSEPPP_1112(a[1],a[3],b[1]),
- NR_COMPOSEPPP_1112(b[1],b[3],a[1])));
- r[2] = NR_NORMALIZE_21(std::max(NR_COMPOSEPPP_1112(a[2],a[3],b[2]),
- NR_COMPOSEPPP_1112(b[2],b[3],a[2])));
- SET_ALPHA;
-}
-
FilterBlend::FilterBlend()
: _blend_mode(BLEND_NORMAL),
_input2(NR_FILTER_SLOT_NOT_SET)
@@ -372,83 +296,6 @@ void FilterBlend::render_cairo(FilterSlot &slot)
cairo_surface_destroy(out);
}
-int FilterBlend::render(FilterSlot &slot, FilterUnits const & /*units*/) {
- NRPixBlock *in1 = slot.get(_input);
- NRPixBlock *in2 = slot.get(_input2);
- NRPixBlock *original_in1 = in1;
- NRPixBlock *original_in2 = in2;
- NRPixBlock *out;
-
- // Bail out if either one of source images is missing
- if (!in1 || !in2) {
- g_warning("Missing source image for feBlend (in=%d in2=%d)", _input, _input2);
- return 1;
- }
-
- out = new NRPixBlock;
- NRRectL out_area;
- nr_rect_l_union(&out_area, &in1->area, &in2->area);
- nr_pixblock_setup_fast(out, NR_PIXBLOCK_MODE_R8G8B8A8P,
- out_area.x0, out_area.y0, out_area.x1, out_area.y1,
- true);
-
- // Blending modes are defined for premultiplied RGBA values,
- // thus convert them to that format before blending
- if (in1->mode != NR_PIXBLOCK_MODE_R8G8B8A8P) {
- in1 = new NRPixBlock;
- nr_pixblock_setup_fast(in1, NR_PIXBLOCK_MODE_R8G8B8A8P,
- original_in1->area.x0, original_in1->area.y0,
- original_in1->area.x1, original_in1->area.y1,
- false);
- nr_blit_pixblock_pixblock(in1, original_in1);
- }
- if (in2->mode != NR_PIXBLOCK_MODE_R8G8B8A8P) {
- in2 = new NRPixBlock;
- nr_pixblock_setup_fast(in2, NR_PIXBLOCK_MODE_R8G8B8A8P,
- original_in2->area.x0, original_in2->area.y0,
- original_in2->area.x1, original_in2->area.y1,
- false);
- nr_blit_pixblock_pixblock(in2, original_in2);
- }
-
- /* pixops_mix is defined in display/nr-filter-pixops.h
- * It mixes the two input images with the function given as template
- * and places the result in output image.
- */
- switch (_blend_mode) {
- case BLEND_MULTIPLY:
- pixops_mix<blend_multiply>(*out, *in1, *in2);
- break;
- case BLEND_SCREEN:
- pixops_mix<blend_screen>(*out, *in1, *in2);
- break;
- case BLEND_DARKEN:
- pixops_mix<blend_darken>(*out, *in1, *in2);
- break;
- case BLEND_LIGHTEN:
- pixops_mix<blend_lighten>(*out, *in1, *in2);
- break;
- case BLEND_NORMAL:
- default:
- pixops_mix<blend_normal>(*out, *in1, *in2);
- break;
- }
-
- if (in1 != original_in1) {
- nr_pixblock_release(in1);
- delete in1;
- }
- if (in2 != original_in2) {
- nr_pixblock_release(in2);
- delete in2;
- }
-
- out->empty = FALSE;
- slot.set(_output, out);
-
- return 0;
-}
-
bool FilterBlend::can_handle_affine(Geom::Matrix const &)
{
// blend is a per-pixel primitive and is immutable under transformations
diff --git a/src/display/nr-filter-blend.h b/src/display/nr-filter-blend.h
index 45da07f27..94c782156 100644
--- a/src/display/nr-filter-blend.h
+++ b/src/display/nr-filter-blend.h
@@ -18,8 +18,6 @@
*/
#include "display/nr-filter-primitive.h"
-#include "display/nr-filter-slot.h"
-#include "display/nr-filter-units.h"
namespace Inkscape {
namespace Filters {
@@ -40,7 +38,6 @@ public:
virtual ~FilterBlend();
virtual void render_cairo(FilterSlot &slot);
- virtual int render(FilterSlot &slot, FilterUnits const &units);
virtual bool can_handle_affine(Geom::Matrix const &);
virtual void set_input(int slot);
diff --git a/src/display/nr-filter-flood.cpp b/src/display/nr-filter-flood.cpp
index fd0600cdb..7afd25e2d 100644
--- a/src/display/nr-filter-flood.cpp
+++ b/src/display/nr-filter-flood.cpp
@@ -13,10 +13,12 @@
# include "config.h"
#endif
+#include "display/cairo-utils.h"
#include "display/nr-filter-flood.h"
-#include "display/nr-filter-utils.h"
+#include "display/nr-filter-slot.h"
#include "svg/svg-icc-color.h"
#include "svg/svg-color.h"
+#include "color.h"
namespace Inkscape {
namespace Filters {
@@ -31,48 +33,39 @@ FilterPrimitive * FilterFlood::create() {
FilterFlood::~FilterFlood()
{}
-int FilterFlood::render(FilterSlot &slot, FilterUnits const &/*units*/) {
-//g_message("rendering feflood");
- NRPixBlock *in = slot.get(_input);
- if (!in) {
- g_warning("Missing source image for feFlood (in=%d)", _input);
- return 1;
- }
-
- int i;
- int in_w = in->area.x1 - in->area.x0;
- int in_h = in->area.y1 - in->area.y0;
-
- NRPixBlock *out = new NRPixBlock;
-
- nr_pixblock_setup_fast(out, NR_PIXBLOCK_MODE_R8G8B8A8N,
- in->area.x0, in->area.y0, in->area.x1, in->area.y1,
- true);
-
- unsigned char *out_data = NR_PIXBLOCK_PX(out);
- unsigned char r,g,b,a;
-
-
- r = CLAMP_D_TO_U8((color >> 24) % 256);
- g = CLAMP_D_TO_U8((color >> 16) % 256);
- b = CLAMP_D_TO_U8((color >> 8) % 256);
- a = CLAMP_D_TO_U8(opacity*255);
-
-#if ENABLE_LCMS
- icc_color_to_sRGB(icc, &r, &g, &b);
-//g_message("result: r:%d g:%d b:%d", r, g, b);
-#endif //ENABLE_LCMS
-
- for(i=0; i < 4*in_h*in_w; i+=4){
- out_data[i]=r;
- out_data[i+1]=g;
- out_data[i+2]=b;
- out_data[i+3]=a;
- }
-
- out->empty = FALSE;
+void FilterFlood::render_cairo(FilterSlot &slot)
+{
+ cairo_surface_t *input = slot.getcairo(_input);
+
+ double r, g, b, a;
+ r = SP_RGBA32_R_F(color);
+ g = SP_RGBA32_G_F(color);
+ b = SP_RGBA32_B_F(color);
+ a = opacity;
+
+ #if ENABLE_LCMS
+ guchar ru, gu, bu;
+ icc_color_to_sRGB(icc, &ru, &gu, &bu);
+ r = SP_COLOR_U_TO_F(ru);
+ g = SP_COLOR_U_TO_F(gu);
+ b = SP_COLOR_U_TO_F(bu);
+ #endif
+
+ cairo_surface_t *out = ink_cairo_surface_create_same_size(input, CAIRO_CONTENT_COLOR_ALPHA);
+ cairo_t *ct = cairo_create(out);
+ cairo_set_source_rgba(ct, r, g, b, a);
+ cairo_set_operator(ct, CAIRO_OPERATOR_SOURCE);
+ cairo_paint(ct);
+ cairo_destroy(ct);
+
slot.set(_output, out);
- return 0;
+ cairo_surface_destroy(out);
+}
+
+bool FilterFlood::can_handle_affine(Geom::Matrix const &)
+{
+ // flood is a per-pixel primitive and is immutable under transformations
+ return true;
}
void FilterFlood::set_color(guint32 c) {
diff --git a/src/display/nr-filter-flood.h b/src/display/nr-filter-flood.h
index 98c374bbd..6f2e5b5d5 100644
--- a/src/display/nr-filter-flood.h
+++ b/src/display/nr-filter-flood.h
@@ -13,9 +13,8 @@
*/
#include "display/nr-filter-primitive.h"
-#include "display/nr-filter-slot.h"
-#include "display/nr-filter-units.h"
-#include "svg/svg-color.h"
+
+class SVGICCColor;
namespace Inkscape {
namespace Filters {
@@ -25,11 +24,12 @@ public:
FilterFlood();
static FilterPrimitive *create();
virtual ~FilterFlood();
-
+
+ virtual void render_cairo(FilterSlot &slot);
+ virtual bool can_handle_affine(Geom::Matrix const &);
virtual void set_opacity(double o);
virtual void set_color(guint32 c);
virtual void set_icc(SVGICCColor *icc_color);
- virtual int render(FilterSlot &slot, FilterUnits const &units);
virtual void area_enlarge(NRRectL &area, Geom::Matrix const &trans);
private:
double opacity;
diff --git a/src/display/nr-filter-gaussian.cpp b/src/display/nr-filter-gaussian.cpp
index 1e59748c4..fbaa9eaa5 100644
--- a/src/display/nr-filter-gaussian.cpp
+++ b/src/display/nr-filter-gaussian.cpp
@@ -32,6 +32,7 @@
#include "display/nr-filter-gaussian.h"
#include "display/nr-filter-types.h"
#include "display/nr-filter-units.h"
+#include "display/nr-filter-slot.h"
#include <2geom/matrix.h>
#include "util/fixed_point.h"
#include "preferences.h"
diff --git a/src/display/nr-filter-gaussian.h b/src/display/nr-filter-gaussian.h
index 01ce9efcb..ebc0f8f52 100644
--- a/src/display/nr-filter-gaussian.h
+++ b/src/display/nr-filter-gaussian.h
@@ -14,12 +14,8 @@
* Released under GNU GPL, read the file 'COPYING' for more information
*/
-#include "display/nr-filter-primitive.h"
-#include "display/nr-filter-slot.h"
-#include "display/nr-filter-units.h"
-#include "libnr/nr-pixblock.h"
#include <2geom/forward.h>
-#include "libnr/nr-rect-l.h"
+#include "display/nr-filter-primitive.h"
enum {
BLUR_QUALITY_BEST = 2,
diff --git a/src/display/nr-filter-merge.cpp b/src/display/nr-filter-merge.cpp
index b913e2cd7..406f74c9e 100644
--- a/src/display/nr-filter-merge.cpp
+++ b/src/display/nr-filter-merge.cpp
@@ -9,28 +9,11 @@
* Released under GNU GPL, read the file 'COPYING' for more information
*/
-#include <cmath>
#include <vector>
-
-#include "2geom/isnan.h"
-#include "filters/merge.h"
+#include "display/cairo-utils.h"
#include "display/nr-filter-merge.h"
-#include "display/nr-filter-pixops.h"
#include "display/nr-filter-slot.h"
-#include "display/nr-filter-units.h"
#include "display/nr-filter-utils.h"
-#include "libnr/nr-blit.h"
-#include "libnr/nr-pixblock.h"
-#include "libnr/nr-pixops.h"
-
-inline void
-composite_over(unsigned char *r, unsigned char const *a, unsigned char const *b)
-{
- r[0] = a[0] + NR_NORMALIZE_21(b[0] * (255 - a[3]));
- r[1] = a[1] + NR_NORMALIZE_21(b[1] * (255 - a[3]));
- r[2] = a[2] + NR_NORMALIZE_21(b[2] * (255 - a[3]));
- r[3] = a[3] + NR_NORMALIZE_21(b[3] * (255 - a[3]));
-}
namespace Inkscape {
namespace Filters {
@@ -46,70 +29,42 @@ FilterPrimitive * FilterMerge::create() {
FilterMerge::~FilterMerge()
{}
-int FilterMerge::render(FilterSlot &slot, FilterUnits const &/*units*/) {
- NRPixBlock *in[_input_image.size()];
- NRPixBlock *original_in[_input_image.size()];
-
- for (unsigned int i = 0 ; i < _input_image.size() ; i++) {
- in[i] = slot.get(_input_image[i]);
- original_in[i] = in[i];
- }
-
- NRPixBlock *out;
-
- // Bail out if one of source images is missing
- for (unsigned int i = 0 ; i < _input_image.size() ; i++) {
- bool missing = false;
- if (!in[i]) {
- g_warning("Missing source image for feMerge (number=%d slot=%d)", i, _input_image[i]);
- missing = true;
- }
- if (missing) return 1;
- }
-
- out = new NRPixBlock;
- NRRectL out_area = in[0]->area;
- for (unsigned int i = 1 ; i < _input_image.size() ; i++) {
- nr_rect_l_union(&out_area, &out_area, &in[i]->area);
- }
- nr_pixblock_setup_fast(out, NR_PIXBLOCK_MODE_R8G8B8A8P,
- out_area.x0, out_area.y0, out_area.x1, out_area.y1,
- true);
-
- // Merge is defined for premultiplied RGBA values, thus convert them to
- // that format before blending
- for (unsigned int i = 0 ; i < _input_image.size() ; i++) {
- if (in[i]->mode != NR_PIXBLOCK_MODE_R8G8B8A8P) {
- in[i] = new NRPixBlock;
- nr_pixblock_setup_fast(in[i], NR_PIXBLOCK_MODE_R8G8B8A8P,
- original_in[i]->area.x0,
- original_in[i]->area.y0,
- original_in[i]->area.x1,
- original_in[i]->area.y1,
- false);
- nr_blit_pixblock_pixblock(in[i], original_in[i]);
+void FilterMerge::render_cairo(FilterSlot &slot)
+{
+ if (_input_image.size() == 0) return;
+
+ // output is RGBA if at least one input is RGBA
+ bool rgba32 = false;
+ cairo_surface_t *out = NULL;
+ for (std::vector<int>::iterator i = _input_image.begin(); i != _input_image.end(); ++i) {
+ cairo_surface_t *in = slot.getcairo(*i);
+ if (cairo_surface_get_content(in) == CAIRO_CONTENT_COLOR_ALPHA) {
+ out = ink_cairo_surface_create_identical(in);
+ rgba32 = true;
+ break;
}
}
- /* pixops_mix is defined in display/nr-filter-pixops.h
- * It mixes the two input images with the function given as template
- * and places the result in output image.
- */
- for (unsigned int i = 0 ; i < _input_image.size() ; i++) {
- pixops_mix<composite_over>(*out, *in[i], *out);
+ if (!rgba32) {
+ out = ink_cairo_surface_create_identical(slot.getcairo(_input_image[0]));
}
+ cairo_t *out_ct = cairo_create(out);
- for (unsigned int i = 0 ; i < _input_image.size() ; i++) {
- if (in[i] != original_in[i]) {
- nr_pixblock_release(in[i]);
- delete in[i];
- }
+ for (std::vector<int>::iterator i = _input_image.begin(); i != _input_image.end(); ++i) {
+ cairo_surface_t *in = slot.getcairo(*i);
+ cairo_set_source_surface(out_ct, in, 0, 0);
+ cairo_paint(out_ct);
}
- out->empty = FALSE;
+ cairo_destroy(out_ct);
slot.set(_output, out);
+ cairo_surface_destroy(out);
+}
- return 0;
+bool FilterMerge::can_handle_affine(Geom::Matrix const &)
+{
+ // Merge is a per-pixel primitive and is immutable under transformations
+ return true;
}
void FilterMerge::set_input(int slot) {
diff --git a/src/display/nr-filter-merge.h b/src/display/nr-filter-merge.h
index b7737e347..a7871641b 100644
--- a/src/display/nr-filter-merge.h
+++ b/src/display/nr-filter-merge.h
@@ -13,11 +13,7 @@
*/
#include <vector>
-
-#include "filters/merge.h"
#include "display/nr-filter-primitive.h"
-#include "display/nr-filter-slot.h"
-#include "display/nr-filter-units.h"
namespace Inkscape {
namespace Filters {
@@ -28,7 +24,8 @@ public:
static FilterPrimitive *create();
virtual ~FilterMerge();
- virtual int render(FilterSlot &slot, FilterUnits const &units);
+ virtual void render_cairo(FilterSlot &);
+ virtual bool can_handle_affine(Geom::Matrix const &);
virtual void set_input(int input);
virtual void set_input(int input, int slot);
diff --git a/src/display/nr-filter-primitive.cpp b/src/display/nr-filter-primitive.cpp
index 31e314055..c81afb874 100644
--- a/src/display/nr-filter-primitive.cpp
+++ b/src/display/nr-filter-primitive.cpp
@@ -12,8 +12,8 @@
*/
#include "display/nr-filter-primitive.h"
+#include "display/nr-filter-slot.h"
#include "display/nr-filter-types.h"
-#include "libnr/nr-pixblock.h"
#include "svg/svg-length.h"
namespace Inkscape {
diff --git a/src/display/nr-filter-primitive.h b/src/display/nr-filter-primitive.h
index 89927fdbd..1205b1d30 100644
--- a/src/display/nr-filter-primitive.h
+++ b/src/display/nr-filter-primitive.h
@@ -1,6 +1,3 @@
-#ifndef __NR_FILTER_PRIMITIVE_H__
-#define __NR_FILTER_PRIMITIVE_H__
-
/*
* SVG filters rendering
*
@@ -11,15 +8,20 @@
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
+#ifndef SEEN_NR_FILTER_PRIMITIVE_H
+#define SEEN_NR_FILTER_PRIMITIVE_H
-#include "display/nr-filter-slot.h"
-#include "libnr/nr-pixblock.h"
-#include "libnr/nr-rect-l.h"
+#include <2geom/forward.h>
#include "svg/svg-length.h"
+struct NRRectL;
+
namespace Inkscape {
namespace Filters {
+class FilterSlot;
+class FilterUnits;
+
/*
* Different filter effects need different types of inputs. This is what
* traits are used for: one can specify, what special restrictions
@@ -112,7 +114,7 @@ public:
/** @brief Indicate whether the filter primitive can handle the given affine.
*
* Results of some filter primitives depend on the coordinate system used when rendering.
- * A gaussian blur will equal x and y deviation will remain unchanged by rotations.
+ * A gaussian blur with equal x and y deviation will remain unchanged by rotations.
* Per-pixel filters like color matrix and blend will not change regardless of
* the transformation.
*
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-19 07:03:13 +0000